A5030795383- Petroleum Processing and Analysis
- Hydrocarbon exploration and reservoir analysis
- Spectroscopy and Chemometric Analyses
- Mass Spectrometry Techniques and Applications
- Enhanced Oil Recovery Techniques
- Laser-induced spectroscopy and plasma
- Graphene research and applications
- 2D Materials and Applications
- Advanced Chemical Physics Studies
- Analytical chemistry methods development
- Spectroscopy and Laser Applications
- Laser-Matter Interactions and Applications
- Laser Design and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Water Quality Monitoring and Analysis
- Perovskite Materials and Applications
- Diamond and Carbon-based Materials Research
- Spectroscopy and Quantum Chemical Studies
- Catalysis and Oxidation Reactions
- Electrohydrodynamics and Fluid Dynamics
- Advanced Photocatalysis Techniques
- Graphene and Nanomaterials Applications
- Mineral Processing and Grinding
- Analytical Chemistry and Chromatography
- Spectroscopy Techniques in Biomedical and Chemical Research
Industrial University of Santander
2016-2025
The Graduate Center, CUNY
2022-2024
City University of New York
2022-2024
CUNY Advanced Science Research Center
2022-2024
Universidad Autónoma de Bucaramanga
2019-2020
Universidad Nacional Autónoma de México
2004-2007
A new strategy has been developed for characterization of the most challenging complex mixtures to date, using a combination custom-designed experiments and data pre-processing algorithm.
Piezoresistivity is the most commonly used sensing principle in cement-based smart composites for strain-monitoring applications. Nonetheless, need external electric power to conduct electrical resistivity measurements restricts scalability of this technology, especially when implemented remote structures. To address issue, manuscript thoroughly analyses piezoelectric properties cement doped with reduced graphene oxide (rGO) and evaluates their potential as self-powered strain sensors. do...
Single-photon emitters serve as building blocks for many emerging concepts in quantum photonics. The recent identification of bright, tunable, and stable hexagonal boron nitride (hBN) has opened the door to platforms operating across infrared ultraviolet spectrum. While it is widely acknowledged that defects are responsible single-photon hBN, crucial details regarding their origin, electronic levels, orbital involvement remain unknown. Here, we employ a combination resonant inelastic X-ray...
The depletion of conventional oil reserves has intensified the search for enhanced recovery (EOR) techniques. Recently, nanoparticle research focused on graphene oxide-based materials, revealing a critical challenge in their practical application. Laboratory investigations have consistently demonstrated that these nanoparticles significant potential formation damage, limitation substantially constrains field implementation. This addresses EOR: developing magnetic oxide (MGONs) can traverse...
The growing field of quantum information technology requires propagation over long distances with efficient readout mechanisms. Excitonic fluids have emerged as a powerful platform for this task due to their straightforward electro-optical conversion. In two-dimensional transition metal dichalcogenides, the coupling between spin and valley provides exciting opportunities harnessing, manipulating, storing bits information. However, large inhomogeneity single layers cannot be overcome by...
Abstract The present study compares two synthesis routes to obtain titanium dioxide and reduced graphene oxide nanocomposites that could be used as photoelectrodes in a water-splitting photoelectrocatalytic system. were obtained using in-situ sol-gel solvothermal methods fabrication routes. Subsequently, the materials characterized by Fourier transform infrared spectroscopy, Raman ultraviolet-visible diffuse reflectance spectroscopy techniques. results indicated strong interaction between...
In this research, an original way to obtain models able predict the asphaltene content in vacuum residua by mid-infrared attenuated total reflectance (MIR-ATR) spectroscopy reduction of X variables was developed. Partial least-squares regression (PLS-R) used reach goal. A 69 samples for calibration and 18 external prediction were used. It demonstrated that dimensional dependent greatly improves power models. This methodology evaluated three processes modeling, predictive are reported. The...
Transition metal dichalcogenides (TMDs) are layered materials that have a semiconducting phase with many advantageous optoelectronic properties, including tightly bound excitons and spin-valley locking. In Tungsten-based TMDs, spin momentum forbidden transitions give rise to dark typically optically inaccessible but represent the lowest excitonic states of system. Dark can deeply affect transport, dynamics coherence bright excitons, hampering device performance. Therefore, it is crucial...
Bio-oils are precursors for biofuels but highly corrosive necessitating further upgrading. Furthermore, bio-oil samples complex and represent a broad range of chemistries. They mixtures not simply because the large number poly-oxygenated compounds each composition can comprise many isomers with multiple functional groups. The use hyphenated ultrahigh-resolution mass spectrometry affords ability to separate isomeric species mixtures. Here, we present first time, this powerful analytical...
A predictive model to determine the concentration of nickel and vanadium in vacuum residues Colombian crude oils using laser-induced breakdown spectroscopy (LIBS) artificial neural networks (ANNs) with nodes distributed multiple layers (multilayer perceptron) is presented. ANN inputs are intensity values vicinity emission lines 300.248, 301.200 305.081 nm Ni(I), 309.310, 310.229, 311.070 V(II). The effects varying number initial weights biases ANNs were systematically explored. Average...
Surface-Enhanced Raman Scattering (SERS) spectroscopic technique and chemometric methods were combined to make a first noninvasive diagnosis of Chagas disease in human blood serum samples. We worked with 110 samples patients; 45 them healthy, 65 infected which separated into asymptomatic symptomatic Because the biological exhibiting signals, SERS effect was achieved using concentrated silver nanoparticles synthesized previously attached prior data collection. spectra each sample acquired...
Graphene oxide (GO)-based materials have been extensively evaluated in emulsification processes due to their amphiphilic properties, thermal stability, and high reactivity that allow for chemical functionalization with polymers, nanoparticles, organic compounds, which can modify physicochemical properties improve the recovery of crude oil. In this work, effect a sulfonated graphene (SGO) nanofluid on interfacial light medium oil–water system was evaluated. GO sulfonation performed by...